#lst = [1,2,3,4,5,6,7,8,9]
#lst.append(0)
#print(lst)

from queue import LifoQueue
st = LifoQueue(maxsize=10)
st.put(1)
st.put(2)
st.put(3)
print(st.qsize())
print(st.get())
print(st.get())
print(st.get())
print(st.empty())
